/*
 * Copyright (C) Rich Moore.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY CONTRIBUTORS ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 */

function cordic( runs, AG_CONST, Angles ) {
    var start = new Date();

    for ( var i = 0 ; i < runs ; i++ ) {
        var X;
        var Y;
        var TargetAngle;
        var CurrAngle;
        var Step;
 
        X = (AG_CONST) * 65536.0;         /* AG_CONST * cos(0) */
        Y = 0;                       /* AG_CONST * sin(0) */

        TargetAngle = (28.027) * 65536.0;
        CurrAngle = 0;
        for (Step = 0; Step < 12; Step++) {
            var NewX;
            if (TargetAngle > CurrAngle) {
                NewX = X - (Y >> Step);
                Y = (X >> Step) + Y;
                X = NewX;
                CurrAngle += Angles[Step];
            } else {
                NewX = X + (Y >> Step);
                Y = -(X >> Step) + Y;
                X = NewX;
                CurrAngle -= Angles[Step];
            }
        }
    }

    var end = new Date();

    return end.getTime() - start.getTime();
}

cordic(2500000, 0.6072529350, [
    (45.0) * 65536.0, (26.565) * 65536.0, (14.0362) * 65536.0, (7.12502) * 65536.0,
    (3.57633) * 65536.0, (1.78991) * 65536.0, (0.895174) * 65536.0, (0.447614) * 65536.0,
    (0.223811) * 65536.0, (0.111906) * 65536.0, (0.055953) * 65536.0,
    (0.027977) * 65536.0
    ]
);
